Process and composition for printing textile fabrics



Patented July 9, 1940 UNITED STATES PATENT OFFICE PROCESS AND COMPOSITION FOR PRINTING TEXTILE FABRICS Delaware No Drawing. Application July 3, 1939, Serial 10 Claims.

The present invention relates to a process and composition for printing textile fabric.

The use of water-soluble salts of acid esters of inorganic polybasic acids in printing is known (cf. British specification No. 439,114, U. S. specification No. 2,079,788). They contribute to the production of prints which are more even than those obtained without the aid of the said salts, which are wetting and penetrating agents.

According to the present invention, very good printing results can be obtained on natural or artificial textile materials of animal or vegetable origin with suitable dyestufis, such a vat-dyestufis, acid wool dyestufis, substantive dyestuffs,

chromium dyestuffs and the like, by adding to the dyestuff or to the printing paste a waterinsoluble or sparingly water-soluble neutral ester of phosphoric acid. The above process of the invention is especially advantageous for printing rayon fabrics, such as viscose crepe,-taffeta from cuprammonium rayon or fabrics from rayon staple fibre. Difiiculties arise in printing these fabrics owing to the fact that being rather hard and only wetted with difliculty-especially in the case of crepe fabricsthey must be stretched very 'much when printed in the printing machine, in order that the patterns of the several printing rollers printed on the material during its passage through the machine may exactlyfit one another.

80 The material must be introduced into the printing machine in such a stretched state that iteannot be stretched any more by the pressure of the printing rollers and other stressesvacting upon it. Whereas irregular, uneven prints are obtained if u no additions or the known additions are made to the dyestufi or printing paste, very even prints are obtained by addition of neutral esters of phosphoric acid.

As water-insoluble or sparingly water-soluble neutral esters of phosphoric acid there may be named tributyl phosphate, tri-isobutylphosphate, triphenyl phosphate, tricresyl phosphate. There may also be used neutralesters containing different alcohol radicals.

Vat-dyestuffs may be used in the process of the invention when textile materials are printed which are stable towards alkaline printing pastes. There may be used anthraquinonoid and indigoid 5o vat-dyestuffs such as are named in the abovementioned specification No. 439,114, page 7. There may also be used mordant dyestufis and acid wool dyestuffs and chromium dyestuffs, the latter being especially suitable for printing animal 56 fibres, such as wool and silk, but also for printing In Germany July 13, 1938 animalised rayon staple fibre; substantive dyestuffs can also be used.

When printing muslin-de-laine with the addition of the above insoluble esters the ease with which the fabrics may be wetted is greatly en- 5 hanced, delicate patterns being more plainly printed thereon. On silk fabrics which can only with difficulty be wetted and can, in most cases, only be printed with uneven prints, the usual acid wool dyestufis and the substantive dyestufis yield, 10 with the above addition, suitably even prints.

The neutral esters of phosphoric acid may be added to the dyestuffs or to the dyestuff pastes, and the dyestufi preparations thus obtained may be used for the preparation of printing pastes. 15 Alternatively, the additional substances may be added when preparing the printing pastes. Besides the before-mentioned neutral esters of phosphoric acid, there may further be added to the dyestufi preparations or to the printing pastes g hydrotropic compounds as wetting and dispersing agents. There may also be incorporated with the neutral esters soluble compounds having capillary activity, for instance condensation products of high-molecular alcohols and ethylene 25 oxide. For the manufacture of the printing pastes there are used the usual thickening agents, if desired also protective colloids and reducing agents.

The invention is suitable for textile printing 3 generally, in particular it is appropriate for machine printing.

The following examples illustrate the invention; but they are not intended to limit it thereto; the parts are by weight, unless otherwise stated:

(1) A printing paste from 100 grams of 4:5:7:4':5':7'-hexabromindigo, 500 grams of wheat starch British gum thickening, grams of tri-isobutyl phosphate; 100 grams of potassium carbonate and 70 grams of formaldehyde sodium 40 sulphoxylate is printed on strongly stretched viscose crepe fabric. The material is dried, steamed for 5 minutes with moist steam free from air, then oxidised, rinsed and soaped at boiling temperature. A light-blue evenprint which pene-- trates very well into the material is thus obtained. The print obtained without the addition of tIi-l-SOblltYlrPhOSDhfltB is completely uneven, and stained and does not penetrate into the material.

(2) 60 grams of 4:4'-dimethyl-6:6'-dichloro- 2:2'-bis-thionaphtene-indigo are printed in the manner'indicated in Example 1. A completely even pink print is obtained which penetrates very well into the fabric. The print obtained without the addition of tri-isobutyl phosphate is irregular and is scarcely visible at the wrong side of the fabric.

(8) 100 grams of 4:5:7:4":5:7-hexabromindigo are printed in the manner indicated in Example 1, with the exception that tributyl phosphate is used instead of tri-isobutyl phosphate. The result obtained corresponds with that obtained in Example 1. Additions of triphenyl phosphate and tricresyl phosphate have the same effect.

Similar results are obtained when using 100 grams of 5:725:7-tetrabromindigo, 60 grams of oxidised Indanthrene Blue (Schultz, Farbstofftabellen, 7th edition, No. 1232), 60 grams of dimethoxy-dehydrodibenzanthrone (Schultz, Farbstofftabellen, 7th edition, No. 1269, green print), 60 grams of bromo-dimethoxy-dehydrodibenzanthrone Schultz, Farbstofftabellen, 7th edition, No. 1269, green print) or 100 grams of the dyestuff having the following formula:

I 1 .LFTIAI [1;0 m

obtainable as described in German specification No. 242,621 (blue-green print).

(4) 100 grams of the dyestuff having the formula:

are made into a paste with 500 grams of British gum thickening, 40 grams of tri-isobutyl phosphate and the usual amounts of a1cohol,-potassium carbonate and formaldehyde-sulphoxylate; viscose mat crepe is printed with the printing paste thus obtained, steamed and finished. In contradistinction to the prints obtained without the addition of tri-isobutyl phosphate, the prints obtained with tri-isobutyl phosphate are even because they are very easily wetted.

60 grams of 3:5-dichloro-N-dihydro- 1 :2: 1' :2'-anthraquinone-azine (Schultz, Farbstolftabellen, 7th edition, No. 1234) are, in the usual manner, made into a paste with potassium carbonate, formaldehyde-sulphoxylate, glycerol and 40 grams of tri-isobutyl phosphate and a thickening; the paste obtained is printed on a delustered cuprammonium rayon fabric, the material is steamed and finished. A light-blue print is obtained which is essentially more even than that obtained without the addition of tri-isobutyl phosphate.

(6) 60 grams of pyranthrone (Schultz, "Farbstofi'tabellen, 7th edition, No. 1245) are thickened, in the usual manner, while adding potassium carbonate, formaldehyde-sulphoxylate and 40 grams of tri-isobutyl phosphate; viscose taffeta is printed with the paste thus obtained, then steamed and finished. Prints are produced which are more even than those obtained without the addition of tri-isobutyl phosphate.

(7) 100 grams of the dyestuif of the following formula:

Cl C] are thickened, while adding potassium carbonate, formaldehyde sulphoxylate and 40 grams of tri-isobutyl phosphate; material is printed with this paste, steamed and finished as usual. An even print is obtained whereas uneven, irregular prints are produced without the addition of tri-isobutyl phosphate.

(8) 30 grams of the azo-dyestufl 4-nitro-2- sulpho-l'-aminodiphenylamine Cleves acid- 4- hydroxy-4'-methyldiphenyl-sulphone are made into a paste with glycerol, British gum; ammonium oxalate and 40 grams of tri-isobutyl phosphate; chlorinated Wool is printed with this paste, then steamed and rinsed. A brown print is thus obtained which is fuller and, in the case of delicate patterns, printed more plainly than that obtained without the addition of tri-isobutyl phosphate.

(9) 30 grams of the mordant dyestuif No. 994 (Schultz, Farbstofftabellen, 7th edition) made into a paste with 500 grams of wheat starchtragacanth-thickening, 30 grams of ethylenethiodiglycol, acetic acid, chromium acetate of 20 B. and 30 grams of tri-isobutyl phosphate are printed on strongly stretched artificial silk crepe. The printed material is dried, steamed for 1 hour without application of pressure, rinsed and soaped. A print is obtained which is more even than without the addition of tri-isobutyl phosphate. A likewise improved print is obtained when using the dyestufi No. 841 (Schultz, Farbstoiftabellen, 7th edition) or the dyestufl No. 1183 l. c. or the dyestuff which is obtainable by condensation of 3-carboxy-4-hydroxy-benzaldehyde with o-cresotic acid and oxidation of the leuco body obtained.

(10) 100 grams of the dyestuif of the following formula:

are made into a paste with 500 grams of British gum thickening, 40 grams of tricresyl phosphate, and the usual quantities of alcohol, potassium carbonate, and formaldehyde sodium sulphoxylate; the paste obtained is printed on viscose crepe, the material is steamed and finished. In contradistinction to the prints obtained without the addition of tricresyl phosphate, the prints obtained with tri-cresyl phosphate are even and smooth.

(11) 100 grams of 4,4-dimethyl-6,6'-dichloro- 2,2-bisthionaphtene-indigo are made into a paste with 500 grams of British gum thickening, 40 grams of triphenyl phosphate, and the usual quantities of alcohol, potassium carbonate, and formaldehyde sodium sulphoxylate; the paste obtained is printed on mat crepe. After finishing even pink prints are obtained.

I claim:

1. The process of printing textile fabric which comprises applying thereto a printing composition containing in addition to the dyeing ingredients a neutral ester of phosphoric acid.

2. The process of printing textile fabric with vat dyestuffs which comprises applying thereto a printing composition containing in addition to the dyeing ingredients a. neutral ester of phosphoric acid.

3. The process of printing textile fabric with vat dyestuffs which comprises applying thereto a printing composition containing in addition to the dyeing ingredients tri-isobutyl phosphate.

4. The process of printing textile fabric with vat dyestuffs which comprises applying thereto a printing composition containing in addition to the dyeing ingredients tri-butyl phosphate.

5. The process of printing textile fabric with vat dyestuffs which comprises applying thereto a printing composition containing in addition to the dyeing ingredients tri-cresyl phosphate.

6. A printing composition containing in addition to the dyeing ingredients a neutral ester of phosphoric acid.

7. A vat dyestuif printing composition containing in addition to the dyeing ingredients 9. neutral'ester of phosphoric acid.

8. A vat dyestufi printing composition containing in addition to the dyeing ingredients triisobutyl phosphate.

9. A vat dyestuff printing composition containing in addition to the dyeing ingredients tributyl phosphate.

10. A vat dyestuif printing composition containing in addition to the'dyeing ingredients tricresyl phosphate.

FRANZ S'I'RENG. 

